LXR linux/drivers/gpu/drm/nouveau/include/nvkm/core/memory.h

   1#ifndef __NVKM_MEMORY_H__
   2#define __NVKM_MEMORY_H__
   3#include <core/os.h>
   4struct nvkm_device;
   5struct nvkm_vma;
   6struct nvkm_vm;
   7
   8enum nvkm_memory_target {
   9        NVKM_MEM_TARGET_INST,
  10        NVKM_MEM_TARGET_VRAM,
  11        NVKM_MEM_TARGET_HOST,
  12};
  13
  14struct nvkm_memory {
  15        const struct nvkm_memory_func *func;
  16};
  17
  18struct nvkm_memory_func {
  19        void *(*dtor)(struct nvkm_memory *);
  20        enum nvkm_memory_target (*target)(struct nvkm_memory *);
  21        u64 (*addr)(struct nvkm_memory *);
  22        u64 (*size)(struct nvkm_memory *);
  23        void (*boot)(struct nvkm_memory *, struct nvkm_vm *);
  24        void __iomem *(*acquire)(struct nvkm_memory *);
  25        void (*release)(struct nvkm_memory *);
  26        u32 (*rd32)(struct nvkm_memory *, u64 offset);
  27        void (*wr32)(struct nvkm_memory *, u64 offset, u32 data);
  28        void (*map)(struct nvkm_memory *, struct nvkm_vma *, u64 offset);
  29};
  30
  31void nvkm_memory_ctor(const struct nvkm_memory_func *, struct nvkm_memory *);
  32int nvkm_memory_new(struct nvkm_device *, enum nvkm_memory_target,
  33                    u64 size, u32 align, bool zero, struct nvkm_memory **);
  34void nvkm_memory_del(struct nvkm_memory **);
  35#define nvkm_memory_target(p) (p)->func->target(p)
  36#define nvkm_memory_addr(p) (p)->func->addr(p)
  37#define nvkm_memory_size(p) (p)->func->size(p)
  38#define nvkm_memory_boot(p,v) (p)->func->boot((p),(v))
  39#define nvkm_memory_map(p,v,o) (p)->func->map((p),(v),(o))
  40
  41/* accessor macros - kmap()/done() must bracket use of the other accessor
  42 * macros to guarantee correct behaviour across all chipsets
  43 */
  44#define nvkm_kmap(o)     (o)->func->acquire(o)
  45#define nvkm_ro32(o,a)   (o)->func->rd32((o), (a))
  46#define nvkm_wo32(o,a,d) (o)->func->wr32((o), (a), (d))
  47#define nvkm_mo32(o,a,m,d) ({                                                  \
  48        u32 _addr = (a), _data = nvkm_ro32((o), _addr);                        \
  49        nvkm_wo32((o), _addr, (_data & ~(m)) | (d));                           \
  50        _data;                                                                 \
  51})
  52#define nvkm_done(o)     (o)->func->release(o)
  53#endif
  54